What does 108,000 miles look like on the inside!

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#21

11-20-2023 | 10:17 AM

downzero

Stellar HDF Member

Joined: Mar 2008

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Quote:

Originally Posted by sbrmike

I would rethink the forged pistons. Forged pistons are more for racing where there is no "Break In" before running. I have always liked / used cast pistons on the street. See what others think?
ETA: I don't think the internals look too bad, especially considering that mileage.

Forged pistons are noisy and have to be fit looser. I would never build an engine with forged pistons unless it was for boost or nitrous.

If this bike was mine, I'd hone the cylinders and probably put two fresh pistons in with my choice of compression ratio and put it back together.

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#22

11-20-2023 | 10:33 AM

TwiZted Biker

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Joined: Mar 2009

Posts: 65,064

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From: Niles Canyon Ca.

At a 100k I'd check the rod play close and the wrist pin bushings at the minimum, indicator on the end of the pinion to check run out, but from the looks of those pistons crank may be in spec still. They are tight I'd do gaskets and seals and leave the lower alone.

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Architect (11-20-2023)